En-27
CN22
E1 CN20 CN22 CN2
The terminal resistor is provided with the master unit.
When there are multiple master units connected by a communi-
cation cable, attach the terminal resistor to CN22 on only one of
those master units.
* Refer to the installation instruction sheet provided with the sig-
nal amplifier when mounting a signal amplifier.
CAUTION
Make sure to install a termination resistor as speci-
fied. Install 1 termination resistor within 500 meters
of the overall length of the transmission line. Install
the termination resistor as shown in Fig. 4.11-3.
• If multiple terminal resistors are installed, the en-
tire transmission system may break.
• If no resistor is installed, a transmission failure may
occur.
Terminal resistor
Don’t connect
terminal resistor.
Master 1Slave 1
Terminal resistor
Master 1Slave 1Slave 2
Outdoor board
Refrigerant circuit address 1
Refrigerant circuit address 2
Fig. 4.11-3
4.11.4. TERMINAL RESISTOR SETTING
9374241033_IM_en_p18-36.p65 26/8/2008, 18:2327
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